Device for preventing explosions.



Na 65L353. Patenfedlune |2,|9o0. F.HENzL DEVICE FOR PREVENTING EXPLOSIONS.

(Application filed Aug'. 15, 1899.)

(lo Model.)

Fly-2.

,y nvenfor l in the Kingdom of Prussia, Germany, have in- `represents in longitudinal section a vessel f Nrriin STATES PATENPI" OFFICE.

FERDINAND nENzE, or sALZKoTTEN, GERMANY.-

DEvlcE FOR PREVENTING EXPLOSIONS. l

srnclrrcATIoNvvforming para of :.ettersv Appnctuon met August 15, 1899.

To all whom, may concern: l i I 'l Be it known that LFERDINAND I-IENZE,a subject of the King of Prussia,-Erpperor of y'Grermany, residing at Salzkotten, near Paderborn,

vented certain new and useful Improvements in Apparatus or Devices for the Prevention of Explosions in Vessels Filled with Easily- Ignitable Liquids, (for which I have applied' f prevent `explosions in vessels filled with liqnids of a dangerous character, owingto their liability to become ignited. The device is so constructed as to be capable of insertion into the vessel in the same Way as a plug and during the transport of the vessel will keep the same completelyclosed, while on emptying the vessel the gases that may have become developed will be allowed to escape at a certain determined degree of pressure.

In the accompanying drawings, Figure 1 providedwith an apparatus or ldevice of the kind specified. Fig. 2 representsv the same apparatus on a larger scale. Fig. 3 is a crosssection on the line A A of Fig. 2, and Fig. 4 is a modified form of said apparatus or device. As seen; vreadily from the accompanying drawings, the device consists of a cylinder a, formed of wire-net of a somewhat ne mesh, and made from any suitable metal or alloy and closed at the lower end. Within the wirenet cylinder a is a protecting-shield b, which is provided with perforations and projections, the latter being so arranged that no damage can be caused to the cylinder a. The tubular internal shield b serves to support the light wire-gauze cylinder u. and maintain its shape. It also serves to protect the gauzecylinder from injury, particularly from sticks or objects inserted through the open top. At its upper portion the cylinder a carries a solid metal tube c, provided, as seen from the drawings, with a flange d, by means of which the apparatus is secured to the side of the containing vessel by means of screws in any suitable mannerl In the interior-of the tube cis Patent No. esnes'mated rime 12, r1900.

sesamo. 727,294." Ntm0ae1.

a suitable plug or valve'f, which will open lau'toin'ttically at a'certain given vpressure of y ygasand may be of any desired construction.

screwed a protecting-cover'g toy prevent an port ofthe containing vessel. i v

.The above-described Qapparatusor device will preferablybe madeof a length equal to the diameter of the cask or-vessel to whichit v ccidental'openingof the plug f during-transis to be applied, so that vthe lower end of the v .i

" same may be fastened to the opposite side or wall of the cask, as may be-seen from Fig. 2.

When thek cask provided with its protect` ing screw-.cap g is toJbe emptied, the protecting-cap gis first unscrewed and then the plug f isremoved, so that the necessary air entering through the tube c can-reach the interior of thev vessel, so asto allow of the'emptying thereof. Should, during this operation, any ame strike'into this holel or opening, only that portion of the combustible liquid can become ignited which isinside the protectingshield b or inside the cylinder a, as the pas.

sage of the i'lame to the other parts ofthe vessel will be preventedbythe wire-netting.

After a certain portion of the liquid has been extracted from the vessel the plug f is replaced in the tube c, so as to prevent the escape of gases generated by the liquid. If, however, the said gases become collected at an excessive pressure, theplug f will be lifted and opened thereby, Yso that they may freely escape, and therefore a bursting of the cask or vessel through excessive gas-pressure will be rendered impossible.

It isnot absolutely necessary that the perforations of the protecting-shield b should be formed in the manner shown at Fig. 2. They may,y on the contrary, be of any suitable Instead of the plug f a valve of any suitable form may be used.

Vhat I claim, and desire to secure by Letters Patent of the United States, is-

1. A safety device for oil-barrels the., consisting of a gauze-wire cylinder closed at one end and provided at the other end with a valve adapted to open at a given pressure, said device being adapted to be inserted in the barvshape-for instance, as represented at Fig. 4.

the Cask or barrel, a valve located insaid open end, and a removable Vcap or eover over said valve. f i

LL. The Combin ation with the Cask or barrel,

havinnr an a erture a tubular iieoe o fitted in said aperture, a valve fin said tubular piece,

and a gauze-Wire cylinder ct located Within the Cask or barrel, fitted to said tubular piece zo at its upper end and having its lower end 'i closed.

5. The combination with the' Cask or barrel, having an aperture a tubular piece c fitted in said aperture, a valve f insaid tubular piece, a gauze-wi re cylinder (t located within the Cask or barrel fitted to said tubularpieoe at its upper end and having its lower end closed, and a strengthening-pieceo'within said gauze-wire cylinder. l'

In testimony whereof I have hereunto' set my hand in the presenceof two witnesses.

\ FERDINAND HENZE, Witnesses: i

WOLDEMAR `I-IAUPT,'.

` ALEX. SoHivIIDT.` 

